Apparatus for mixing air and gas



. (No Model.)

W. C. CLARKE.

APPARATUS FOR MIXING AIR AND GAS.

No. 602,828. Patented Apr. 26, 1898.

UNrrnD ,STATES PATENT @triest VILLIAM C. CLARKE, OF NEW YORK, N. Y., ASSIGNOR TO THE AOETYLENE APPARATUS MANUFACTURING COMPANY, OF I/VEST VIRGINIA.

APPARATUS FOR EVI SPECIFICATION forming part of Letters Patent No. 602,828, dated April 26, 1898.

Application tiled July 27, 1897 T @ZZ whom t may concern.-

Be it known that I, WILLIAM (l. CLARKE, of the city, county, and State of New York, have invented a new and useful Improvement in Devices for Mixing Air and Gas, of which the following is a specification.

The present invention relates to a device for mixing air and gas and feeding the same at a predetermined ratio of mixture to the consuming device.

In the drawings I have shown a construction embodying my invention, in which- Figure 1 is a view mainly in central vertical section. Fig. 2 is a view along line .fr :t of Fig. 1, and Fig. 3 is a detail view of the gasvalve-controlling device.

Like numerals of reference refer to like parts throughout the several views of the drawings.

Referring to the drawings in detail, 1 represents the base, having an outer cylindrical shell 2 and a similar inner cylindrical shell 3. Intermediate of these two shells are two other similar shells 4 and 5, the space between the shells 3 and 4 and between the shells 5 and 2 being filled with water or other similar sealing fluid.

6 designates a bell which projects downwardly between the shells 3 and 4 and is provided with a cover 7, having valves S upon the inside thereof opening to the atmosphere and automatically closing upon the descent of the bell.

9 designates an outer bell, which projects downwardly between the shells and 2, forming an annular chamber between the outer wall of the bell 6 and its inner surface, which annular chamber is in communication with the annular chamber formed between the walls of shells 4 and 5, the two chambers constituting the gas-spaca'which receives its supply of gas from the gaseinlet pipe 10. The annular space confined within the bell 6 and the shell 3 constitutes the air-space and receives its supply of air through the valves 3, which are in communication with the atmosphere.

Projecting upwardly through the center of the device is a tube 11, in which is seated a guide-stem 12, secured to the dome of the bells 6 and 0, a suitable weight 13 being pro- Serial No. 646,064. (No model.)

vided upon the dome to counterbalance a predetermined interior pressure.

From diametrically opposite points of the outer wall of the shell 2 project guide-stems 14, which work through eyes formed in lugs 15, projecting from thedome of the bells. l

Communicating with the gas-supply pipe 10 is a pipe 16, which is provided at its upper portion with a valve 17, normally open, the plug of said valve being provided with an elbow-lever 18, one arm of which lies in the path of a projection 19 on rod 20, which is secured to the dome of the bell 9. To the other arm 21 of the elbow-lever is secured a stem 22, the end of which passes through an eye formed on a collar 23, secured to the pipe 16. A collar 24 is secured to the stem 22, and a spring 25 bears upon the collar 24 and the .collar 23, thus normally maintaining the parts in the position shown in Fig. 3, in which the valve is open.

26 designates a stand-pipe which projects upwardly in the interior of the shell 3, the upper portion of this pipe being provided with an inwardly-opening suction-valve 27.

28 designates the pipe for drawing off the gas from the gas-chamber. This pipe projects upwardly between the shells 4 and 5. Its lower end is connected with a coupling 29, which is connected with the pipe 26 by connecting-tube 30. Also threaded into this coupling is the service-pipe 31.

The operation of the device will be apparent. Gas being fed into the gas -chamber through the pipes 10 and 16, the pressure, overcoming the weight of the bells and the counterweight 13, raises the bells, at the same time opening the valves 8, so as to admit air to the air-space. As the upward limit of movement is reached the projection 19 contacts with the arm 18 of the elbow-lever, closing the gas-valve. The pressure then decreases and the bells descend, closing the valves` S and opening the suction-valve 27 and forcing the air through the pipe 26 and the gas through the pipe 42S, the air and gas mixing in the service-pipe 3l, the supply of gas to the gas-space and air to the airspace going on then continuously and automatically as the demands upon the service require.

ICO

Of course instead of the service-pipe 3l I may use a mixing-chamber; but it has been deemed unnecessary to show this construction, as it :is an obvious expedient.

What is claimed as new is'- 1. The combination of an inner shell and an outer shell, an inner bell and an outer bell whereby are formed in connection with said shells a gas-chamber and an air-chamber, said bells adapted to be moved into and out of said shells, a gas-supply for the gaschamber, a valvev for controlling said supply having means in connection With it for holding it normally open, air-valves automatically controlled for said air-chamber and adapted to be open when the bells are moved out of the shells and a device carried by the bells for closing the valve against the means for holding it open when the bells are moved out of the shells whereby the gas-supply will be temporarily shut o and permit the bells to move into the shells again to force the air and gas out of their respective chambers to be mixed, substantially as described.

2. The combination-of an inner shell and an outer shell, an inner bell and an outer bell whereby are formed a gas and an air chamber, said bells adapted to be moved into and out of said shells, a gas-supply pipe in the gas-chamber, a valve in said gas-pipe, a device supported from the dome of the gaschamber for actuating the gas-valve, an aireduotion pipe in the air-chamber, a suctionvalve therein, air-valves carried in the dome of the air-chamber opening to the atmosphere as the bells are moved out of the shells and adapted to close on the descent of the bells, which movement of the bells forces the air and gas from out their respective chambers to be mixed, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

1 WILLIAM c. CLARKE. 4Witnesses:

' F. A. THAYER,

M. W. HECKMAN. 

